Hi
I have gone through your project details can fix error and can add header to mobile and tablet view.
I am a senior web developer with extensive development background. I have more than 10 years of development experience, in-depth skills in Website Design development (PHP, MySQL, HTML, CSS, JavaScript, jQuery, WordPress, Joomla, Shopify, Woo-commerce and WordPress plugins and search engine optimization SEO).
Inbox me so we can discuss your project.
Thanks